【正文】 ased on singlechip wireless temperature data acquisition system from the DS18B20 digital temperature sensor signal is transmitted directly to the microcontroller slave microcontroller slave signal processing and temperature nRF2401 wireless module is sent to the microcontroller host and displayed on the host, while temperature is too high or too low alarm function. The design has a powerful data processing, display and intuitive, friendly interface, costeffective, wide range of applications can be widely used in many areas of industrial control, instrumentation, instrumentation, mechanical and electrical integration, and smart home. KEY WORDS Wireless； Temperature Acquisition ； Microcontroller ； Alerting 湖南商學(xué)院畢業(yè)設(shè)計 目 錄 1 緒論 ......................................................................................................................................... 1 設(shè)計目的 ......................................................................................................................... 1 課題的研究現(xiàn)狀和發(fā)展趨勢 ......................................................................................... 1 課題的研究現(xiàn)狀 .................................................................................................. 1 發(fā)展趨勢 .............................................................................................................. 3 2 總體方案設(shè)計 ...................................................................................................................... 4 系統(tǒng)方案比較與選擇 ..................................................................................................... 4 控制器模塊比較與論證 ...................................................................................... 4 溫度傳感器模塊比較與論 證 .............................................................................. 5 無線模塊的比較與論證 ...................................................................................... 5 鍵盤顯示模塊的比較與論證 .............................................................................. 6 電源模塊比較與論證 .......................................................................................... 6 系統(tǒng)最終方案 ................................................................................................................. 7 系統(tǒng)總體設(shè)計 ................................................................................................................. 8 3 硬件電路的設(shè)計 ................................................................................................................ 10 主控模塊的電路設(shè)計 ................................................................................................... 10 SPCE061A 簡介 ................................................................................................. 10 SPCE061A 性能 ................................................................................................. 10 結(jié)構(gòu)概覽 ............................................................................................................ 11 芯片的引腳排列和說明 .................................................................................... 11 凌陽開發(fā)板電路 ................................................................................................ 13 電源電路 ....................................................................................................................... 14 外部穩(wěn)壓電路 .................................................................................................... 14 凌陽單片機板穩(wěn)壓電路 .................................................................................... 15 12v 防爆聚合物鋰 離子蓄電池 ......................................................................... 15 湖南商學(xué)院畢業(yè)設(shè)計 電源自動切換電路 ............................................................................................ 15 溫度采集電路 ............................................................................................................... 16 DS18B20 簡介 ................................................................................................... 16 DS18B20 的 4 個主要數(shù)據(jù)部件 ....................................................................... 16 DS18B20 的高 速緩存存儲器 ........................................................................... 17 電路設(shè)計 ............................................................................................................ 18 無線模塊電路 ............................................................................................................... 18 nRF2401A 無線模塊基本特性與參數(shù)指標 ..................................................... 18 nRF2401A 無線模塊功能簡介 ......................................................................... 18 nRF2401A 無線模塊結(jié)構(gòu)示意圖 ..................................................................... 19 nRF2401A 及其外圍電路 ................................................................................. 19 nRF2401A 電源指示電路 ................................................................................. 19 nRF2401A 接口電路 ......................................................................................... 20 鍵盤顯示電路 ............................................................................................................... 21 LED 顯示器件的工作原理 ............................................................................... 21 HD7279A 鍵盤顯示電路設(shè)計 ........................................................................... 22 HD7279A 芯片簡介 ........................................................................................... 22 HD7279A 特點 ................................................................................................... 23 HD7279A 引腳及說明 ....................................................................................... 23 4 軟件設(shè)計 ..............................................................................................